Tool: built-in image_gen (transparent background)
Use case: logo-brand. Asset: final macOS application icon for TinySTT, local speech-to-text app. Design a beautiful, distinctive, unmistakable uppercase T monogram. One bold sculptural white-to-pale-mint ribbon forms a broad top bar and strong central descending stem; a subtle stepped cut at the right end of the crossbar suggests an audio waveform becoming text. Keep T extremely legible. Center this symbol inside a dark midnight-teal macOS squircle tile with a restrained rich teal glow near the upper left, soft polished depth and precise edges. Contemporary premium native Mac app aesthetic, confident and simple, not a generic microphone. Front-on flat icon asset, not a perspective mockup. Tile occupies about 82 percent of the square canvas, transparent outside the rounded tile, no white background. Large monogram, clean negative space, no delicate lines, looks excellent at 16 and 32 pixels. Only the single stylized T letter, no app name, words, border, extra icons, watermark, scenery, pedestal or decorative sparkles. 1024x1024 square.
